What are the two components that enable a Hi-Lok to hold materials together?

The correct answer highlights the specific components that make up the Hi-Lok fastener system, which is essential in aerospace applications for its reliability and strength. The Hi-Lok consists of a pin and a collar.

The pin serves as the primary securing element that goes through the materials being joined. It provides stability and strength, ensuring that the components can withstand various stresses and vibrations typical in aerospace environments. The collar, which is designed to grip the pin, secures it into place. When the collar is threaded onto the pin, it pulls the materials tightly together, providing a strong, vibration-resistant joint.

This combination of the pin and collar is specifically engineered to provide effective axial load transfer, making the Hi-Lok a preferred choice in high-stress applications, including in aircraft assemblies. Understanding this mechanism is crucial for anyone working with aerospace fasteners, as it ensures the integrity of the assembly under operational conditions.